PlainPill

B Vitamin Complex

People mainly take B Vitamin Complex for mood, focus, anxiety. Based on 14 first-hand reports and 0 meta-analyses & systematic reviews in the medical literature. Ranked #285 of 1,974 overall.

35
User score
Mostly positive
50% positive7% mixed0% negative43% unclear

Of reports that state an outcome, 88% are positive.

Clinical research
CLimited research
0
meta-analyses
4
RCTs
34
papers

What B Vitamin Complex does, according to users

Of the people who reported each effect, the share who said it got better.

What the research says

Systematic reviews and meta-analyses from PubMed, with their published conclusions.

CLimited research

1–4 randomized controlled trials, no meta-analysis yet. The grade measures how much human research exists — read the conclusions below for what it found.

No meta-analyses or systematic reviews published yet — 4 randomized trials found.

Dosage people report

As stated by users — not a recommendation. Follow the label or your doctor.

dailyas reported
megadoseevery morning
5-100 mg per B vitaminas reported

Reported side effects

How often each side effect came up across all reports.

anxiety ×1neon urine ×1

What users say

Verbatim quotes, shortened only — each links to the original discussion.

“Started taking 5-HTP, B vitamin complex in addition to many supplements that I was already taking.”
Source discussion ↗
“B Vit Complex”
Source discussion ↗
“a b vitamin complex with biotin in it can greatly increase testosterone, and it is just good to take to aid in improving cognition.”
Source discussion ↗
“you could very well be over dosing on B6 which causes anxiety.”
Source discussion ↗
“I've also been taking a B vitamin complex, vitamin D3 and probiotics. I feel so much calmer and more patient all day”
Source discussion ↗
Top discussions (5)

Other options for mood

User data from public discussions; research from PubMed. Information only, not medical advice — talk to a doctor before starting, stopping or combining anything. Data updated October 2, 2026. How we rate